Aromatic polyamides containing keto-benzocyclobutene pendants
AssigneeThe United States of America as represented by the Secretary of the Air Force
InventorsLoon-Seng Tan, Narayanan Venkatasubramaian
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Abstract
A crosslinkable polymer having repeating units of the formula: ##STR1## wherein Ar is selected from the group consisting of ##STR2## These polymers are useful in the preparation of molecular composites with rigid-rod polymers, including para-oriented benzobisazole polymers, such as benzobisthiazole, benzobisoxazole and benzobisimidazole polymers.
Claims14
A polymer having repeating units of the formula:
- ##STR12## wherein Ar is selected from the group consisting of ##STR13##
A molecular composite system consisting essentially of a para-oriented benzobisazole polymer and a crosslinkable matrix polymer having repeating units of the formula:
- ##STR18## wherein Ar is selected from the group consisting of ##STR19##
Dependencies are inferred from the claim text.